People all ages, hailing from different nationalities, religions, cultures and backrounds. Uniting the group as an ideal fraternity amongst people.
Answer: B) To muse.
Explanation: an infinitive verb is a verb with the word "to" in front of it, and that can act as a noun, an adjective or an adverb. When we use an infinitive verb, "to" is a part of the verb and not a preposition. In the given sentence, the example of infinitive is "to muse" because "muse" is a verb. The phrases "to town", "to college" and "to university" aren't infinitive because they are not verbs, they are prepositional phrases.
I believe the correct answer is to help the reader visualize a view where water and sky are difficult to tell apart.
The author is trying to portray an image where the water and the sky are somehow blending into each other - you can't tell where one ends and the other one begins, because both items are colored similarly - various shades of blue.
That answer is false. Hope I helped! :)